My Beta 30 K28539 with TMC 60 A gearbox recently started throwing ATF off the coupling. Suspected the output shaft seal but turned out to be leaking out along the thread between the coupling retaining nut and the shaft.
The mechanic (a John Deere mechanic; only one available where I am now) expressed surprise that there was no provision for sealing this avenue. Should there be? is my gearbox missing something?
He reassembled with a sealant on the thread.
Is there an exploded view/parts list available for this gearbox?
There is a sealant applied to the spline when the transmission is assembled originally at the factory.
This had to be there or it would have started leaking from the original start up, not with 1400 hours on it.
You can get some information from this website www.twindisc.it/en/marine-gearboxes/
If you cannot find what you want here email us directly. We should have something that will help you.
Stanley